Finding the Fourth Proportional to 3,982.29, 5,498.78 and 3,561.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,982.29 : 5,498.78 = 3,561.90 : x
2. Step 2: Convert to fraction form
   3,982.29/5,498.78 = 3,561.90/x
3. Step 3: Cross multiply
   3,982.29x = 5,498.78 × 3,561.90
4. Step 4: Simplify right side
   3,982.29x = 19,586,104.48
5. Step 5: Solve for x
   x = 19,586,104.48/3,982.29
6. Step 6: Final answer
   x = 4,918.30